kirkaldy



v(NoV Modem '4 Sheets-Sheet l.

' J. KIRKALDY.

DONKEY ENGINE PUMP AND CONDENSER.

Patented Feb. 16, 1886.

(NMoael.) A 45mmsheets J. KIRKALDY. r

DONKBY ENGINE PUMP AND GONDENSBR.

No.v336,522. Patented Feb. 16, 1886.

f (No Model.) 4 Sheets-Sheet '3. J. KIRKALDY.

DONKEY ENGINE PUMP ANDv GONDENSER.

. Patented Peb. 16," 1886.

E Y F 0v .55(5) (No M0661.) 4 sheets-sheet 4. J. KIRKALDY.

DONKBY ENGINE PUMP AND GONDENSER.

No. 336,522. Patented Feb. 16, 1886.

` ject of the Queen of Great Britain, residing at UNITED -STATES PATENTOrricn.

JOHN KIR-KALDY, OF 4() VES'I INDIA DOCK ROAD PO'PLAR, COUNTY OFMIDDLESEX,

ENGLAND.

DONKEY-ENGINE FUil/"IP` AND CONDENSER.

SPECIFICATION forming part of Letters Patent No. 336,522, dated February16, 1886.

Application filed December 15,1385.

To @ZZ whom it 17mg/ concern,.-

Be it known that I, JOHN KIRKALDY, a sub- 4() W est India Dock RoadPoplar, in the county of Middlesex, England, engineer, have invented aCombined Donkey-Engine Pump and Condenser, of which the following is aspeciiication.

According to thisinvention I combine asurface-condenser on one bed-platewith a don key-enginepump,adapted for performing the various servicesrequisite on board ship, making the outer casing of the condenser formpart ofthe frame-work of the engine, and I cause the discharge from thepump to enter the one end ofthe casing of the condenser and to pass awayfrom it at the other end, so that whenever the engine is set to work thewater discharged by the pump serves as a cooling medium for cooling theseveral pipes or passages of the surface-condenser, within which notonly may the steam from the donkey-engine pump be condensed, but alsosteam passed direct to the condenser from a steam-boiler. IVhen freshwater is required for drinking purposes, the steam, passing direct tothe condenser from a steam-boiler, may be made to pass through pipes orpassages in the condenser separate from those through which the steamfrom the donkey-engine is passed to be condensedand may be separatelycollected and stored. rThe condenser will also serve as a medium forobtaining heated water for any purposes which may be required. Thesurface-condenser may alsobe utilized for condensing steam from thewinches, cranes, and other small engines used on board ship; and if itis desired to maintain a vacuum to assist in working such engines, thenI form the engine with an air-pump and hot-well, from which the watercondensed in the condenser is pumped off or the feed-pump might be madeto act as an air-pump as well as feed.

If desired7 winches, windlasses, steam steering-gear, and such likemechanism may be combined on one bed and frame with the engine and pumpgear.

By making the condenser in one piece with the donkey-engine considerablesaving is effected in pipe-connections,in addition to making the wholeoccupy less space.

- same; and Fig. 18 is a section on Serial No. 165,732. (No model.)

. Figures I to l5 of the drawings hereunto an nexed show various viewsof a compound donkey-engine pump and condenser constructed inthe mannerI prefer for carrying out my invention.

Fig. 1 is a side elevation; Fig. 2, avertical section; Fig. 3. a planView; Fig. 4, a section on the line B B, Fig. l; Fig. 5, a section onthe line C C, Fig. l. Fig. 6 shows an elevation of the piston-rod whichcarries the piston of the steam-engine cylinder, and also the piston ofthe pump, and also shows the connecting rod and crank for giving motionfrom this piston-rod to the crank-shaft. Fig. 7 is a section on the lineD D, Fig. 6; and Fig. 8, a section on the line E E. Fig. 9 is anelevation, and Fig. 9X a plan view of the slidevalve and the feed-pumpplunger, both fast on one rod, and of the eccentric and connectingrodwhich gives motion to them. Fig. 10 is a vertical section of the bed orcolumn which forms the main portion of the frame. Fig. 11 is anelevation, and Fig. l2 a plan View, of the the line F F, Fig. 10. Figs.14 and 15 show the way in which I modify the construction when anair-pump as well as a circulating or general pump is used.

In these figures, A is a hollow bed or column, having cast with it atone end a steam-cylinder, B, and valve-box` C, and at the opposite endpump-cylinders D and E, and the bearings F for the crank-shaft of theengine. rllhe cylinders B and D are in a line with one another, andtheir pistons B' and D are both fixed on one piston-rod, I. This rod,atits center, is jointed to a connecting-rod, J, which is also coupledto the crank-pin G on the crankshaft G. The slide-valve box C andfeedpump E are also in a line with one another, and the slide-valve andthe plunger K of the feedpump are both iiXed on one rod, L, to whichmovement is given by a connecting-rod, M, from an eccentric, N, on thecrank-shaft. In the drawings the slide-valve is shown as being formed asa piston-valve, but it might be an ordinary D slide valve; l or otherordinary form of valve might he used.

C is a stop-valve on the steam-inlet to the valve-box.

O is a valvebox at the end of the hollow IOO bed or column A, in whichare the suction and delivery valves for the double-acting pump D. Thedelivery-chamber of the valve-box opens into .the end of the bed orcolumn A, as shown 1n Fig. 10, and at the opposite end of the column isa delivery-outlet, A, so that all water pumped by the pump D has to passthrough the bed or column A.

I P are coils of pipe contained Within the bed or column A. The endsofeach coil areled out from the bed or column. The coil marked P may becoupled at I?2 to a pipe leading from the steam -space of a steamboiler, so that steam from the boiler may be passed through the coil andcondensed into water for drink- Aing purposes. The other (marked P) isat P3 connected to the exhaust-outlet from the valve-box by a pipe notshown in the drawings, and at the other led to a hotAwell, so that steamexhausting from the steam-cylinder is condensed in the coil and flowsinto the hotwell, from which it is again pumped back to the boiler bythe feed-pump E.

Vhen it is desired to obtain a vacuum to aid in working the engine, thecoil of pipe P may be made to discharge into a closed hotwell, and thecondensed water and air be pumped therefrom by an air-pump, Q, added tothe engine in the manner shown at Figs. 14 and l5. The pump-cylinders Dand Q are in this case placed side by side, and their pistonrods areboth fixed to the piston-rod of the steamcylinder B. As before stated,the surface-condenser might also be utilized for condensing steam fromthe Winches, cranes, and other small engines on board ship, either tomaintain a vacuum to assist in working such engines or simply to avoidthe blowing off of steam and to obtain a supply of hot water. Whensoused, the bed or column A might be of larger dimensions, so as to beable to contain within it a greater number of coils of tube.

The tubes used for the coils in the surfacecondenser may be either plainor corrugated, solid drawn or brazed, and the coils may be side by sideor interlaced with one another, and may be connected either to the dooror cover of the condenser or to trunk-pipes. The engine also might bemade with its frame adapted to be bolted down to a foundation and usedfor driving machinery, propelling boats or vessels, or for otherpurposes for which steamvengines are used. The engine also might be madeas a compound engine, if desired.

When it is necessary to heat the feed-Water pumped into steam-boilers bythe feed-pump herein described, I arrange the delivery-pipe from thispump so that it passes the water through the condensercase, or so thatit passes through one set of the coiled tubes, the steam being in thisarrangement passed into the condenser-case instead of intothe tubes.

Vhen it is necessary to heat the Water raised by the water-pump on itsway through the condenser-case, I pass not only the exhauststeam fromthe donkeyengine through its coiled tubes, but also steam from a boilerthrough the other coiled tubes, and it' necessary reduee the quantity ofwater raised by the pump, so that it may pass sufficiently slowlythrough the condenser-case to be raised to a high temperature. n

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is The combination ot' bed or column A with condenser-tubesled through it, the valve-box C, for pump-valves at one ofits ends, theoutlet A at the opposite end, the steam-cylinder B, parallel with thebed or column A at its outlet end, the pump-cylinder D, paralleltherewith at its opposite ends, their piston-rods in one piece orsecured together and giving motion by a connectingrod, J, to acrank-shaft, G, and an eccentric, N, on the crank-shaft giving motion toslide-valve rod L, which also serves as pump-rod for the feed-pump E,substantially as hereinbefore described, and illustrated in the drawingsannexed.

JOHN KIRKALDY.

Vitnesses:

Gno. J. B. FRANKLIN, T. J. OsMANs, Bothv of 17 GraeechmchStreet, London,E. C.

